Stop attachment for warping machines



Dec. 25, 1923. 1,478,915

J. J. ROBERTS STOP ATTACHMENT FOR WARPING MACHINES Filed Feb. 18, 1922 Fatented Dec. 25, 1923.

UNITED STATES JESSIE JACKSON RoEERTs, or WINDER, GEORGIA, ASSIGNOR T0, FLETCHER c.feRAp- 9 i DICK, or WINDER, GEORGIA.

sror ATTAoHM n'n roR WARPINGYMAQHINES,

Application filed February 18, 1922. Serial No. 537,654. 3'

To all whom it may concern:

Be it known that I, JEssIE JACKSON R013- ER'rs, a citizen of the United States, residing at Winder, in the county of Barrow and the State of Georgia, have invented'a new and useful Stop Attachment for Warping Machines, of which the following is a specification. This invention relates to a stopatt'achment for warping machinesand particularly to facilitate and insure falling or dropping of the drop wires having eyes through which the warp threads pass. *These drop wires are loosely attached to the machine, so that when the yarn which passes through them is broken, the are supposed to fall and, through suita le interposed means, shift the gears of the machine andcause the latter to stop. Inconstructions now in common use these drop wires become clogged with dirt, dust, lint,trashand other foreign particles, so that they lose their free play or sensitivenessto dropping action and continue to stand in upright position when the yarn breaks, and as a consequence, the

warping machine continues to operate and an extended break in the continuity of the yarn resultsp The improvedattachment embodying the features of the present invention causes a continual. vibration of the drop wire loar and effects an elimination of a large part of the foreign matter that would otherwise adhere thereto, and when the yarn breaks, the dro wires will be free to immediately fall an instantaneously stop the machine. The improved attachment also serves as a bearing for operatively fixing the position of the drop wire bar and the rollers to which it is attached.

In the accompanying drawings:

Fig. 1 is a longitudinal section on the line 1-1, Fig. 2, of well known warping machine elements, showing the improved attachment applied thereto, a portion of the frame of the machine also being illustrated.

Fig. 2is a top plan view of the structure shown by Fig. 1.

The usual form of drop wire bars A and V A are illustrated in the drawings and have a hollow formation with peripheral slots, as at a, through which pro ect drop wires a having'outer looped terminals a and movably associated at their inner ends with relation to each bar by means of a'central rod A, so that any one of the drop-wires along the length of its bar' Afmay 'be free to drop from an upright position as shown by ig. 1 in full lines to the horizontal position illustrated by dotted" lines and en gage a shifting arm or lever'B,1 which is connected as usual with suitable shifting gear or clutch mechanism as well understood in the art. Also included in thegroup of well known elements in warpingr'machinee is the roller C, which runs parallelwith" the bars A and A and at a distance r fromthe latter. I

The improved attachment comprises a vibrating arm 1 havingat one extremity an eye or hub 1 which is 'securedon theone bar A by means of a set screw 2. Depending from the hub or eye l is' a projection3fand to the lower end thereof one terminal of a A spring 4 is secured, the-opposite terminal of said spring being attached to a portion 4*" of the frame. In the'drawin'gs 'a second bar A 1s shown and has a hub orey'e' a secured thereto by a set screw 2 the hub or eye a havingadependingarm 3 'simila'r to the arm 3 of the hub or eye l heretofore described. Between the lower ends of the projections 3 and 3 a link rod or connector 10 is interposed, so' as to give the two bars l A and A a unitary action and also whereby both may be resiliently influenced. by'the spring 4. The bar A is constructedsimilarly to the bar A and'providedj with drop wires a having outer looped terminals "or eyes if, this construction being. in all irespects similar to the wires'of the'bar"A.'

The wires of the bar A also cooperate with a shifting lever or arm' B similar to that heretofore described and for same 'pur- Poser 1 l J 'r The vibrating arm 1 embodying thee'ssential features of the invention extends over the hub or eye a on the bar A and has an intermediate interiorily I screw threaded boss 11, in which is fitted a stop screw 8, held in its adjusted position by a j amb nut 9, the lower end of the stop screw 8 projecting below the lower edge of the arm 1 and adapted to forcefully engage the top portion of the hub or eye a The free end of the arm 1 is-form ed with depending angular hook 12 having a lower curved edge 13 to engage a snall or analogous cam roller "C ti nd the'cam rotate thedirection of the arrow shown in Fig. 1 and the 6 operation ofithisz cam' with: relation to i the to the latter, and a cam secured to the roller arm 1 is against the resistance "of the spring 4. p U 1 The warp threads' aretl-ireatled er passed a through the loops or eyes a? atthe outer 10 free ends'of the wires" 61/, 'the'latter wires t -.st n.di pw rd y a sh veby, l lines 1 and. "Having" warp jthi ea'ds passing eret iioii h fasj "di'cated by 'idotte'd lines. iyv henj the vva'rpi' ;,fii1ac'hine"is "motion,

ller"C "sjregularly'retated in the din "of the arrow and; the. outer" hooked d1 ofth arm 1 and the latteiiarmare all li'ai'sed as the 'lowen'cu'rved edge er hooked "progresses "over the iiicliiiedjsurfaee or the gradually ri'sir'i'g ipart ofjtliejcamh 'iinti'l lt'hesai'd hooked end 12 "'reac'lfesfthe drop Z,,'when the 1 is caused toLsii'dHen'ly fill through the action or the pi-fiig 4, anuapbsaive vibratioiris' not onl impos don the bar A but likewise o'iithe barf trough the stop screw 18,. which st esorsfigldenly impacts against thejupthisinea'ns "thefeyes'or lo'op's er t me x p p i? I made "entirely jcle'ar'ed of any "are- "enmulatians or .Jli ft, ,dirt, dust or, other aera e-151d flv ill' that be maintained in. condition for sensitive "dropping actionwhen either one of rhea "ra threads engaging the eyes break; and; as willv be understood, when the; wrap threads engaging either (one of rheje ejs beciomes broken, the eye through which the; Broken thread passes will im- 'fme'aiateiy fall'and enga'gfieft'he upwardly; pro- 'jectingjs'hiftiii' arm B and stop the "machine, 1w hoiit any material dam'ageor "continued breakage the sa ine "or other tin-fiends. 1 e da 't bh i t Q i -fi simplified :th'rm and-is adaptedto be applied "types of; warping 'inachines "by I Fthe ino'de or application, V A, i'o'ns offthe improved attacl"in ent;'Ttlfe same essential features will be embodied and consist 'offth'e 'vib'rating arm andfthe 6am. "The improved attachj iie'nt -also be afpplied without jrno'difythe "structural features of "the machine to which it is applied.

What is claimed as new is:

-1. The combination with a drop wire bar and'a rotating part of" a warping machine, of a vibrating arm connected to the bar to give a: quick intermittent ioscillatory motion and engaged by the free end of the vibrating arm" to instantly relieve the drop wires of accumulations and render them sensitive to automaticdropping'action when the warp threads engaging the wires becomes broken.

2. The combination with'a warping machine having. a drop wire bar carrying a plurality of dropwires with outer terminal eyes, a roller and a stop projection, of a vibrating arm having one end applied to the drop wire bar and the opposite end formed with an angularprojection, the arm operating to give a quick intermittent oscillatory'motion to the bar,,a cam on the roller having an angular drop and engaged by the said angular projection of the vibrating arm, and spring means associated with the vibrating arm for effecting a continuous vibration or" said arm and elimination of lint and other accumulations from theeyes or the drop wires.

3. The comb'nation with a warping machi'nehaving drop wire bars provided with loosely mounted drop wires having terminal eyes'through Which the warp threads are passed, a roller; and projections operativ'ely associated with the machine for stopping the latter, of a vibrating arm connected at one extremity to one of the drop wire bars and extending across the other drop wire bar and having a" free angularly disposed end, the vibrating arm having depending projection and one of the drop 'wire bars h'av-in'g'a similar projection, the two latter pro ections being connected, the arm operating to give a quick -intern'iitte'nt oscillatory motion to the bars, an impacting stop' device engaging afportion. off'the projections 'on one of the drop wire bars, a spring "connected to and controlling the vibrating arm relatively to both drop wire bars, and :a

"cam with an angular shoulder secured on the roller and continually engaged by the angular "end'of the vibrating arm.

JESSIE JACKSON ROBERTS. 

